SG-9101CG-D20SGAAC

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Programmable Oscillators

The SG-9101CG-D20SGAAC is one of the programmable oscillators released by Shenzhen Gaosi Electronics Technology Co., Ltd., a China-based manufacturer specializing in the development and sale of various types of oscillators. It is an economical yet reliable PCB-mounted, single board-level programmable oscillator.

Application Field

The SG-9101CG-D20SGAAC is suitable for use in the automotive, computing, telecommunications, connected home and industrial control industries where precise, low phase noise oscillator performance is required. It is designed to provide reliable and accurate output frequency ranges from 1MHz to 100MHz with a wide operating temperature range from -55°C to +85°C.

Working Principle

The SG-9101CG-D20SGAAC is a highly programmable oscillator, thanks to its internal Digital Control Loop (DCL). DCL uses digitally filtered delta-sigma modulators to reduce noise in its output signals. The internal 38kHz PWM crystal oscillator generates excitation pulses which are then passed through a pulse transformer. These pulses are then rectified and integrated, resulting in a DC voltage which is then fed back to a comparator. The DC voltage is compared to a reference voltage, and depending on whether there is a difference between the two, the output of the oscillator changes accordingly, thus allowing the user to adjust the frequency of the output correctly.

Differential Output

The SG-9101CG-D20SGAAC is available with differential outputs for improved signal quality. The differential output is produced by the DCL output stage, providing improved phase noise characteristics and output amplitude. This enables the use of the differential signal for a wide range of interface applications.

Encapsulation

The SG-9101CG-D20SGAAC is encapsulated with a Lead-free, RoHS compliant, high-temperature epoxy resin, providing superior mechanical and environmental protection, even in extreme conditions.

Conclusion

The SG-9101CG-D20SGAAC is an economical and reliable programmable oscillator based on Digital Control Loop (DCL) technology. It is ideal for use in automotive, computing, telecommunications, connected home and industrial control applications where precise, low phase noise oscillator performance is required. It is available with differential outputs for improved signal quality and is encapsulated with a Lead-free, RoHS compliant high-temperature epoxy resin.

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